Britain's Prince Harry made a surprise visit to the Australian SAS headquarters over the weekend.

The 29-year-old royal, a captain in the British Army, joined families of members of the Special Air Service Regiment (SASR) killed in duty to lay wreaths in the Garden of Reflection at their Campbell Barracks in Perth during his first state visit to Australia.

The SASR's commanding officer, named as 'Lieutenant Colonel G', commented: "It has been 10 years since Prince Harry last visited Australia and we are humbled and grateful that he has made the time to join us.

Prince Harry took a tour of the Australian Special Air Service barracks during his first state visit to Australia.

"Prince Harry knows what it means to serve his nation on operations and most importantly what it means to the families of those serving.

"Today's visit by His Royal Highness and the Prime Minister represents a unique opportunity to recognise the broader SAS regimental family that provides the back-up and support at home.

"Families play a critical role for those serving in the SASR, and indeed the whole of the Australian Defence Force, and we are thankful that the families of some of our serving, former and fallen members were able to be here today."

Accompanied by Prime Minister, Tony Abbott, Harry enjoyed lunch with present and former members of the unit as well as touring the base as part of his 36-hour visit to Australia.

The popular royal expressed his sadness at having to head off so soon, flying to Dubai for a fundraiser for his Sentebale Aids charity tonight (07.10.13).

He told journalists at Sydney airport: "I just can't get the time off work these days. The next time I come back you will be struggling to get rid of me I am sure."